html, body {
  height: 100%;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

.editor {
  width: 100%;
  height: 100%;
  display: flex;

  .left {
    width: 200px;
    display: none;
  }

  .center {
    width: 0;
    flex: 1;
  }

  .right {
    width: 200px;
    display: none;
  }
}

#myCanvas {
  width: 100%;
  height: 100%;
  position: relative;
}
